scHuciiEKT.] INDEX AND BIBLIOGRAPHY. 309 



Platystrophia acutilirata (Coiirad) — Continued. 



Oithis bilorata var. acutilirata White, Scioiul Auu. ]{ep. Iiuliaua Bureau of 

 Statistics and (Jeol., IXSO, p. 487, ])1. 2, liffs. 5-9; — Tenth Rep. State Cieol. 

 Indiana, 1881, p. llil, pi. 2, ligs. .^)-!1. 



Platystrophia acutilirata Hall and Clarke, Pal. New York, VIII, I't. I, 18!)2, ]». 223. 



I.oc. Richmond, Indiana; Oxford, Ohio; LoiiiHiana, Missouri (Keyes). 



Platystrophia biforata (Selilothcini). Cliazy-Niagara (Ord. and Sil.). 



Tcrel>ratMlites biforatus Schlotheini, Petrefactenkunde, 1820, p. 2().">. 



Spirifer sheppardi Castelnau, Essai Syst. Sil. rAmdrique Sei)t(^ntrionale, 184:^, 

 p. 42, pi. 14, lig. 15. 



Delthyris bracliynota Hall, Gcol. New York; Rep. Fourth Dist., 1843, p. 70, lig. 6. 



Orthis and Delthyris Owen, (Jeol. Expl. Iowa, Wisconsin, Illinois, 1844, pi. 15, 

 figs. ;>, 7. 



Delthyris lynx llall (i)artini; non Eichwald), Pal. New York, I, 1847, p. 133, pi. 

 32D, lig. 1. 



Spirifer liiiV.rata var. lynx Hall, Ibidem, II, 1852, p. 65, pi. 22, iig. 1. 



Orthis bifoi-atus Billings, Canadian Nat. Geol., I, 1856, p. 206, hgs. 6-10. — Nichol- 

 son and Hiude, Canadian Jour., XIV, 1874, p. 158. — White, Rep. U. S. Geogr. 

 Geol. Survey west 100th Meridian, IV, 1874, p. 74, pi. 4, hg. 9.— Nettelroth, 

 Kentucky Fossil Shells, Mem. Kentucky Geol. Survey, 1889, p. 35, |)I. 29, 

 figs. 18-29.— Foerste, Proc. Boston Soc. Nat. Hist., XXIV, 1890, p. 312. 



Orthis lynx Billings, Geol. Canada, 1863, p. 167, tig. 149.— Miller (partim), Cin- 

 cinnati Quart. Jour. Sci., II, 1875, p. 25. 



Platystrophia regubiris Shaler, Bull. Mus. Comp. Zool., 4, 1865, p. 67. 



Orthis (Platystrophia) biforata Meek, Pal. Ohio, I, 1873, p. 112.— Foerste, Geol. 

 Ohio, VII, 1895, p. 579, pi. 25, figs. 7, 8. 



Orthis (Platystrophia) biforata var. lynx Hall, Second Ann. Rep. N. Y. State 

 Geologist, 1883, pi. 35, figs. 11-14 (non figs. 9, 10, 15 of pi. 35 and fig. 30, pi. 

 34 = P. biforata lynx). 



Orthis biforata var. lynx forma reversata and daytonensis Foerste, Bull. Denison 

 Univ., I, 188.5, pp. 81, 82, pi. 13, figs. 7, 8. 



Platystrophia lynx Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 202, 

 223, pi. 5B, fig. 10.— Keyes, Geol. Survey Missouri, V, 1895, p. 64, j.I. 39, fig. 5. 



Platystrophia biforata Winchell and Schuchert, Minnesota Geol. Survey, III, 

 1893, p. 4.55, pi. 33, figs. 51-54.— Whiteaves, Pal. Foss., Ill, Pt. Ill, 1897, 

 p. 177. 



Loc. Throughout the horizons mentioned above in North America; also in 

 England, Scotland, Ireland, Gotland, Scandinavia, Oeland, and Russia. 



Platystrophia crassa James. Lorraine (Ord.). 



Orthis (Platystrophia) dentataf ? Meek (non P.ander), Pal. Ohio, I, 1873, p. 117, 

 pi. 10, iig. 3. 



Orthis (Platystrophia) crassa .lames, Cincinnati Quart. Jour. Sci., I, 1874, p. 20. 



Orthis dentata Miller, Ibidem, II, 1875, p. 27. 



Orthis centrosa ^liller. North American (Jeol. Pal., 1889, p. 356. 



Platystrophia crassa Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 223. 



Platystrophia biforata var. crassa Winchell and Schuchert, Geol. Survey Min- 

 nesota, III, 1893, p. 458, pi. 33, figs. 55, 56.— Whiteaves, Pal. Foss., Ill, Pt. 

 Ill, 1897, p. 178. 



Loc. Cincinnati, Ohio; Spring Valley, Minnesota; Lake Winnipeg, Manitoba. 



Platystrophia laticosta Meek. Lorraine (Ord.). 



Orthis (Platystrophia) laticosta (.lames) Meek, Pal. Ohio, I, 1873, p. 116, pi. 10, 



fig. 4. 

 Orthis (Platystrophia) cypha James, Cincinnati Quart. .lour. Sci., I, 1874, p. 20. 



